:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.5;
    color: var(--color-gray-900);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-gray-200);
    z-index: 50;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    background: linear-gradient(to right, var(--color-primary), #60a5fa);
    padding: 0.5rem;
    border-radius: 0.5rem;
}

.logo-text {
    display: flex;
    align-items: baseline;
}

.logo-google {
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-ai {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-left: 0.25rem;
}

.logo-pro {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-primary);
    margin-left: 0.25rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav a {
    color: var(--color-gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav a:hover {
    color: var(--color-primary);
}

.menu-toggle {
    display: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: white;
    color: var(--color-primary);
    border: 1px solid var(--color-gray-200);
}

.btn-secondary:hover {
    background-color: var(--color-gray-50);
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    padding-top: 8rem;
    padding-bottom: 4rem;
    background: linear-gradient(to bottom right, var(--color-gray-50), var(--color-gray-100));
    position: relative;
    overflow: hidden;
}

.offer-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: #dbeafe;
    color: var(--color-primary);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    max-width: 48rem;
}

.highlight {
    color: var(--color-primary);
}

.gradient-text {
    background: linear-gradient(to right, var(--color-primary), #60a5fa);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-text {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    margin-bottom: 2rem;
    max-width: 36rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
}

.hero-image {
    position: relative;
    max-width: 64rem;
    margin: 0 auto;
}

.hero-image::before {
    content: '';
    position: absolute;
    inset: -1rem;
    background: linear-gradient(to right, rgba(37, 99, 235, 0.2), rgba(96, 165, 250, 0.2));
    border-radius: 1rem;
    filter: blur(2rem);
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 1rem;
    position: relative;
    z-index: 1;
}

/* Features & Benefits Sections */
.features,
.benefits {
    padding: 5rem 0;
}

.benefits {
    background-color: var(--color-gray-50);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    margin-bottom: 3rem;
    text-align: center;
}

.features h2,
.benefits h2 {
    font-size: 2.25rem;
    text-align: center;
    margin-bottom: 1rem;
}

.features-grid,
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

/* Pricing Section */
.pricing {
    padding: 5rem 0;
    background-color: white;
    position: relative;
    overflow: hidden;
}

.pricing h2 {
    font-size: 2.25rem;
    text-align: center;
    margin-bottom: 1rem;
}

.price {
    text-align: center;
    margin: 2rem 0;
}

.amount {
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-gray-900);
}

.pricing-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    text-align: center;
    margin-bottom: 3rem;
}

.pricing-card {
    max-width: 48rem;
    margin: 0 auto;
    background-color: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
}

.pricing-header {
    background: linear-gradient(to right, var(--color-primary), #60a5fa);
    color: white;
    padding: 2rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.pricing-features {
    padding: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.pricing-action {
    padding: 2rem;
    text-align: center;
}

.pricing-note {
    margin-top: 1rem;
    color: var(--color-gray-600);
    font-size: 0.875rem;
}

/* CTA Section */
.cta {
    padding: 4rem 0;
    background: linear-gradient(to right, var(--color-primary), #60a5fa);
    color: white;
    text-align: center;
}

.cta h2 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.cta-note {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-top: 1rem;
}

/* Footer */
.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-200);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    margin-top: 1rem;
    color: var(--color-gray-400);
}

.footer-links h4 {
    color: white;
    margin-bottom: 1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links a {
    color: var(--color-gray-400);
    text-decoration: none;
    display: block;
    padding: 0.5rem 0;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-gray-800);
    color: var(--color-gray-400);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .nav {
        display: none;
    }

    .menu-toggle {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0.5rem;
    }

    .menu-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background-color: var(--color-gray-900);
        margin: 5px 0;
        transition: 0.3s;
    }

    .menu-open .menu-toggle span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-open .menu-toggle span:nth-child(2) {
        opacity: 0;
    }

    .menu-open .menu-toggle span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .menu-open .nav {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        padding: 1rem;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}